This was a very good episode, one of the best episodes so far this season-- 10/10. The other being the field trip and seeing what both sides-- K-ON senior members quartet and Azu-- did during that time.

Spoiler:

In-between Azusa's frequent daydreaming and constant reminder of Mugi, Ritsu, Yui and Mio, and their hilarious and rather unique quirks and antics, I sympathize with her. What I mean is that next year, those four will not be there around her. In a way, when you look at the episode, you feel bad for her that she'll be alone next year-- her best friends are leaving.

They had the best times together and a lot of fun, and you could see it and hear it in Azu's wavering voice whenever she recalled those fun times in front of Ui and Jun. Ui even seemed surprised to hear a criticism remark from Azu about Yui's performance. Azu has grown very close to the group and, to me, it's probably going to be painful for Azu later on to see them leave.

There is hope, a light at the end of the tunnel you could say, Jun might join next year. And, given that Ui is just as talented as Yui, and maybe more, she might join.

K-ON next year might be a trio than a quintet-- Azu, Ui, and Jun, unless they find more members. But, at this point, it seems almost definite that those three are the new K-ON members.

In the end, Azu was terrific, perhaps beautiful, this episode and I loved the various imagery and the animation quality.